Car-underframe.



CAR UNDERFRAME.

4 sains-SHEET 3.

' Patented May 2 3,i 1916.

' erably are connectedA by' a' 4plate 3 secured to the upperv ianges. ,thereof, are united tothe center sill by means of a connection 4 in such manner as .to substantially constitute V5 the draft sills, fand-the center sill as a sin'- gle unltary structure formed 'of sections. The connection 4 cooperates4 witha bolster 5 which 'may beofthe one-piece type, as shown'in Figs. 9, 1 0, 13 and others,-or built 'tptp' of a plurality of parts, as is shown in lgs. 1, 2,` 3, 4 and 7. For cooperation with the built up typeof bolster,'the 'connection y1s which the coverl plate 7 of the bolster This cover plate 7 being riveted tot e. up-

per angeslof the bolster member servesk to j In order-toi unify the bolster structure. provide a very rigid` and secure attachment' 2.0 vided with rearwardly projecting wings 8, which lap the ends of the center sill 1 'and' are disposed in and .substantially fill the space between the top. and bottom flanges 9'-v In order to further 'and 10- thereof. strengthin tbe-wings 8', they may be provided with outstanding triangular shaped ribs 11 arrangedl substantially horizontally,l and the wings 8 are preferably secured -to the center sill l-Lby'- means of rivets passing through lthe web in rows between the said ribs.

' sidewalls 14 of the connection-4 and to the i shelves 15, which project outwardly from the lower edges of the respective side walls. The opening 6 may bearbitrarily' considered as. dividing the connection at 'the bolster into upper and lower sections 16 and 17 respectively; the lower section 17 being positioned within the bolster including the-center bearj'in 18 tlo the cover plate 7 and constitutesy'a ller for the bolster; and the upper section 16 being above the bolster constitutes a bridge between the rear wall 12 and the front wall 19. The structure described thus )rovides a draft and center sill connection oi suflicient sectional area at all points within and above the bolster to trans- `mit directly to the center sill 1 all stresses set up in the draft members 2.

@ne form of construction adapted to be used in connection with a one-piece type of bolster having an integral upper member, as shown in Fig. 13, is illustrated in Figs. .9 to 12 inclusive, wherein the connection 1s shown as being provided with an open slot 20. A portion of this slot as at4 21, 1s relatively narrow, being only of a width suf- ,ficient to permit the passage ofthe upper provided wlth an opening -.6, t ough. asses.

tothe center sill, the yconnection 4 is profiller casting section 27.

26 carries a wing member 28 and the lowermember 27 carries a complemental wing 'member 29, and the upper tions 2 6 and 27 are respectively providedthereof and being located` Forwardly of the rear wal1 12 to whichthewings 8 of atthe bolster'l by the assembly includingthe In assembling this construction it is refer.

The .forward ortension member 22 of thebolster.l In 'order to facilitate the proper seating or securing of the bolster within the connection, the upper edge of the lslot 21 is preferably below the-position to be occupied by the upper surface of the bolster when' it is finally 'secur ff' the'con'nection, and thereforethe narrow'islot 21 leads to a larger opening`24 which provides bearing shoulders v -for the -upper vmember 22 of the-bolster. yfor the open-ended slot and the one-piece bolster, the construction illustrated 9 to 13 inclusive is substantially the same as the construction illustrated in Figs 1 to 8 80' In order to facilitate repairs it .may be Except in Figs.

inclusive.

found .desirable at times to form the connection of vtwo-parts asis illustrated in Figs. 14 to 19 inclusive, wherein the connection is shown as comprising an upper, or bridge,l

section 26.,and a lower,- or bolster, center- The upper section and lower secwithl engaging shoulders 30 and 31.

parts are "assembled, in each case, in a similar manner, and therefore it is believedto be only necessaryv to describe the 'assembling of one embodiment, for example, an

able that the sections 26 and 27 be rst sedivided connection.

Except for slight variations necessarily: 'due tothe construction of the different embodiments of. the connection, thel several,

cured to the end of the center sill 1 by rivets 32 passing through the wings 28 and 2,9 and through lthe web 34 of the center sill.

31, and the inset 'trated in Figs. 9 to'12. The4 bolster upper member 22 is passed `within the narrow opening 21 and is nested between the bearing shoulders 25 and the upper section26. The bolster when in position within the slot is secured against displacement by means of rivets 36 passed through the side wall 37 of the section 27 and thebolster flanges 38. The draft members 2 are then secured to the sections 26 and 27 by means of the rows of rivets 39 passing through the side walls 40 of the upper member 26 and the side walls 37 of the lower member 27 My invention may obviously be embodied in other and further specific constructions without departure, and therefore the specific constructions of preferred forms here showil and described,are to be considered as illustrativeand' notin a limiting sense.

portions of the sections 26 and proper spaced relationship engaging shoulders 30 and portion 35 provides an enlar-ged opening analogous to the opening 24 in the open end unitary connection illusi Heiligthas described I yinsentaviiat.

llgtion; extend-ing abgovc .saidF bolster and be- 'tween partsofthe bolster,`

i' 2. Ina vcar underframe',

landa bolster;.of a single connectionv com-t prisin'g a boxlike forward portion, a tri- *angularv shaped rear portion, and 4an intermediate portion extending across and between parts ofthe bolster, the said rrear porvtion being slotted to lap the end of said .'lcenter'sill'. I i3.' In a car underframe, the combination of a ,singlel beam center sill; draft sills; and

f f ar bolster;l of a. connection'pcoperating with "alljpre'viqus mentioned parts, said connection-including a' forward box-like portion :extending intosaid bolster, and a rearward 'poi-'tion provided'with wings adapted toflap the web of the center sill.. y

"" 4,' In a carunderframe, the Combination ofa single beam center sill; a bolster; dra-ft.

sills; and a connection between'said center sill and said draft sills, said connection in cluding a bridge over said bolsterv and a bolster.

' 6. In a car underframe', the combination with a single center sill; draft sills; a bolster; and a connection' between said draft sills and said center sill, said connectionbe- -ing provided with vertical wings having thereon triangular horizontal webs, and provided with an opening for the passage of a portionof said bolster, the partabove said opening comprising a bridge and the'part beneath said opening comprising a iller for the4 bolster diaphragms.

7.- In a carunderframe, tne combination y"with a single beam center sill:I draft sills spaced apart from said center sill; a bolster crossing' between said center sill and said "dra-ft sills yand below the upper surface of said sills; and a; connection 'between said' draftgsills and'said center sill, said conn`ec.4

fi s ',spafced` apart'from Isa'ii'dieentei ,1., car` underframe', theljcombination uA i With'a 'single beamfcenter sill ;'{draft sills; ..1 and.'a.,bolste'r of a eonnectionbetween'saidter i f sill with awsingle be'am'fcen the .draft sills, arri'i iinterfnie of a single I-beam center sill; draft sills;

a bolster crossing between said center sill and said draft sills and belowthejupper surface of said sills; and a connection connecting said draft sills and said center sill and constituting the compression member for the bolster and a seat for the center bearf lng.

.10. In a car underframe, the combinatin -of a single beam center sill, spaced' apart draft sills, a bolster extending across the ends ofsaid center sill and the ends of said Vdraft sills, and a connection having apart extending below the upper part of said.

bolster, said connection carrying said draft sills, and connecting said bolster' and said center sill.

11. In a Acar underframe, a'continuous, member extending fr om one end of theca-r to the other comprising draft sills, a single beam center sill, and connections interme diate said draft sills and said center sill, saidconnections being provided with openingstojpermit the passage .of the tension member of .the bolster and forming also a compression member within said bolster.

12. In a car underframe, the combination of a center sill; spaced apart draft sills; and a connection, said connection having side Walls lapping the ends of the draft sills and extending rearwardlv through the bolster and connecting with a rear wall, said side fwalls being provided with openings to receive a bolster part, and wings extending rearwardly from said rear` Wall and adapted to lap the end of said center sill.

13. In a car underframe, the combination of draft sills; a center sill -spaced apart from said draft sills; a bolster arranged at 'right angles tothe axis of said sills and passing between the ends of' said sills; and a connection partly within said bolster and lapping said draft sills and said center sill,

said connection including aboX-like portion provided with an opening to permit the passage of a part of said bolster, said box-like portion being provided with transverse horii zontal and vertical ribs, one of said vertical ribs comprising a front wall adjacent said opening and another of said ribs comprising a rear wall also adjacent said open.ing,and wings extending from said rear wall and v'apping the ends of the center sill. .i

14. As an article of manufacture, a connectionfbetiveen a single beam center `sill and spaced apart draft sills, including a forward ox-like' portion provided with an opening `between its upperl and lower portions for the passage of the tension member of a bolster,

' a vertical-wall to the'rear' of said opening,

a pair of complemental -wingsv provided with reinforcing ribs spaced-"apart and adapted tolap the end ofthe center sill and. to be secured thereto. 

